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SE0302068D0 - A system operable to transmit and receive messages - Google Patents

A system operable to transmit and receive messages

Info

Publication number
SE0302068D0
SE0302068D0 SE0302068A SE0302068A SE0302068D0 SE 0302068 D0 SE0302068 D0 SE 0302068D0 SE 0302068 A SE0302068 A SE 0302068A SE 0302068 A SE0302068 A SE 0302068A SE 0302068 D0 SE0302068 D0 SE 0302068D0
Authority
SE
Sweden
Prior art keywords
controller
transceiver
time slot
medium
false alarm
Prior art date
Application number
SE0302068A
Other languages
Swedish (sv)
Inventor
Michael Lewis
Original Assignee
Infineon Technologies Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Infineon Technologies Ag filed Critical Infineon Technologies Ag
Priority to SE0302068A priority Critical patent/SE0302068D0/en
Publication of SE0302068D0 publication Critical patent/SE0302068D0/en
Priority to US10/890,709 priority patent/US7619980B2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

A system, minimising transmission delays and avoiding loss of synchronisation, using a contention based multiple access protocol comprises n transceivers each comprising a detector for detecting the condition of the medium and connected to a controller for switching the transceiver from receiving to transmitting or vice versa. Each transceiver also comprises a to the controller connected backoff counter operable to decrement its count at the end of each time slot when performing a backoff procedure. A transceiver which wishes to transmit and is performing the backoff procedure for which the detector detects that the medium is busy, the controller freezes the backoff counter and if this medium busy condition is subsequently determined to be a false alarm the controller resumes the backoff counter at the beginning of the next time slot after rejection of the false alarm, using the time slot timings in force prior to the false alarm event.
SE0302068A 2003-07-14 2003-07-14 A system operable to transmit and receive messages SE0302068D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0302068A SE0302068D0 (en) 2003-07-14 2003-07-14 A system operable to transmit and receive messages
US10/890,709 US7619980B2 (en) 2003-07-14 2004-07-14 System operable to transmit and receive messages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0302068A SE0302068D0 (en) 2003-07-14 2003-07-14 A system operable to transmit and receive messages

Publications (1)

Publication Number Publication Date
SE0302068D0 true SE0302068D0 (en) 2003-07-14

Family

ID=27764989

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0302068A SE0302068D0 (en) 2003-07-14 2003-07-14 A system operable to transmit and receive messages

Country Status (2)

Country Link
US (1) US7619980B2 (en)
SE (1) SE0302068D0 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
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US8441971B2 (en) * 2004-12-21 2013-05-14 Intel Corporation Idle state management
US8050200B2 (en) * 2006-10-04 2011-11-01 Marvell World Trade Ltd. Opportunistic 40 MHz mode of transmission in wireless transmitters
EP2106166A1 (en) * 2008-03-26 2009-09-30 THOMSON Licensing Relaxed deterministic back-off method for medium access control
US8345547B2 (en) * 2010-08-23 2013-01-01 Intel Corporation Channel access mechanism for wide channels used in overlapping networks
US9326158B2 (en) 2011-08-20 2016-04-26 Qualcomm Incorporated Method and apparatus for communicating with extended range in a wireless network
US9924509B2 (en) 2013-09-27 2018-03-20 Qualcomm Incorporated Techniques for configuring an adaptive frame structure for wireless communications using unlicensed radio frequency spectrum
CN106576349A (en) * 2014-07-31 2017-04-19 株式会社Ntt都科摩 User terminal, wireless base station, wireless communication method, and wireless communication system
US20160212767A1 (en) * 2015-01-16 2016-07-21 Sharp Laboratories Of America, Inc. Systems and methods for contention access in license assisted access

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4941143A (en) * 1987-11-10 1990-07-10 Echelon Systems Corp. Protocol for network having a plurality of intelligent cells
US6097705A (en) * 1997-01-06 2000-08-01 Cabletron Systems, Inc. Buffered repeater with independent ethernet collision domains
JP3047970B2 (en) * 1997-11-21 2000-06-05 日本電気株式会社 Optical subscriber system with PDS configuration
US6229817B1 (en) * 1997-12-18 2001-05-08 Advanced Micro Devices, Inc. System and method for programming late collision slot time
US6891847B1 (en) * 1998-09-11 2005-05-10 Share Wave, Inc. Method and apparatus for accommodating asynchronous data transmissions in a wireless computer network
US6859463B1 (en) * 1999-11-08 2005-02-22 Itt Manufacturing Enterprises, Inc. Methods and apparatus for organizing selection of operational parameters in a communication system
US6813260B1 (en) * 2000-03-16 2004-11-02 Ericsson Inc. Systems and methods for prioritized access in a contention based network
AU2002211436B2 (en) 2000-10-06 2006-03-16 Cognio, Inc. Systems and methods for interference mitigation among multiple WLAN protocols
EP1338125A2 (en) * 2000-11-03 2003-08-27 AT & T Corp. Tiered contention multiple access (tcma): a method for priority-based shared channel access
US7292598B2 (en) * 2000-12-18 2007-11-06 Texas Instruments Incorporated Adaptive algorithms for optimal control of contention access
AU2002237781A1 (en) 2001-01-02 2002-07-16 At And T Corp. Random medium access methods with backoff adaptation to traffic
US7099671B2 (en) 2001-01-16 2006-08-29 Texas Instruments Incorporated Collaborative mechanism of enhanced coexistence of collocated wireless networks
US7206840B2 (en) * 2001-05-11 2007-04-17 Koninklike Philips Electronics N.V. Dynamic frequency selection scheme for IEEE 802.11 WLANs
US7570656B2 (en) 2001-06-18 2009-08-04 Yitran Communications Ltd. Channel access method for powerline carrier based media access control protocol
US6961344B1 (en) * 2001-06-19 2005-11-01 Advanced Micro Devices, Inc. Verification of collision detection and resolution in a home network
US7103116B2 (en) * 2001-09-24 2006-09-05 Atheros Communications, Inc. Detection of a false detection of a communication packet
DE60228899D1 (en) * 2001-11-09 2008-10-23 Matsushita Electric Industrial Co Ltd Method for guaranteed media access in a wireless network
US20040030530A1 (en) * 2002-01-30 2004-02-12 Kuo-Hui Li Apparatus and method for detection of direct sequence spread spectrum signals in networking systems
US7133422B2 (en) * 2002-01-31 2006-11-07 Texas Instruments Incorporated Implementing enhanced distributed coordinating function (EDCF) with a single hardware backoff counter
US7403539B1 (en) * 2002-10-09 2008-07-22 Marvell International Ltd. Clear channel assessment in wireless communications
US7231215B2 (en) * 2002-11-07 2007-06-12 Infineon Technologies Wireless Solutions Sweden Ab Method and a central control unit for channel switching in a packet-based wireless communication network
US7239844B2 (en) * 2002-11-11 2007-07-03 Broadcom Corporation Wireless local area network supporting multiple slot times

Also Published As

Publication number Publication date
US20050026639A1 (en) 2005-02-03
US7619980B2 (en) 2009-11-17

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